On 10/24/2018 08:58 PM, Hannes Schmelzer wrote: >> Hello Hannes, >> >> thanks for reporting the problem. >> >> There are two possible reasons: >> >> a) The build process introduces relocations of the reported type. >> b) The relocation records are overwritten before relocation. This >> happens if you update uninitialized globals. >> >> To analyze your problem further, please, provide instructions for >> building your version of U-Boot (repository, commit, config). That will >> allow to check for a). >> >> Coreboot can be run on QEMU (https://www.coreboot.org/QEMU). QEMU would >> allow to analyze case b). Are you able to reproduce the problem with >> QEMU? >> >> Best regards >> >> Heinrich >> > Hello Heinrich, > > thanks for this input. > The "trouble" occurs also with QEMU, have a look to console output below. > > Maybe you can investigate on this, I've pushed the branch to my github > account: > > https://github.com/oe5hpm/u-boot/tree/bur-next-pp065mb > config is "brpp065mb" > > please let me know if i can help. > > cheers, > Hannes
And running qemu-x86_defonfig results in do_elf_reloc_fixups32: unsupported relocation type 0x2 at fff84e38, offset = 0xfff00091 So the problem is not restricted to your board. I have had a first look at the relocations actually present in the u-boot ELF file. Your repo: make brpp065mb_defconfig make objdump -r u-boot | cut -c10-20 | sort | uniq R_386_32 R_386_NONE R_386_PC32 u-boot master: make qemu-x86_defconfig make objdump -r u-boot | cut -c10-20 | sort | uniq R_386_16 R_386_32 R_386_NONE R_386_PC16 R_386_PC32 The current relocation code only supports a single relocation type (R_386_RELATIVE). What I still do not understand is why most of the relocations that we actually see inside U-Boot are of type R_386_RELATIVE). So where are the relocations transformed on the way from u-boot to u-boot.bin? The following command drops some sections and creates an image without any relocation information: objcopy --gap-fill=0xff -O binary -R .start16 -R .resetvec u-boot u-boot-nodtb.bin But where are the R_386_RELATIVEs created? @Bin: do you have an understanding of how this works? Best regards Heinrich _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
